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Finding the Fourth Proportional to 76,029.70, 114,042.75 and 20,625.70

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Solution

The fourth proportional to 76,029.70, 114,042.75 and 20,625.70 is: 30,938.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,029.70 : 114,042.75 = 20,625.70 : x
  2. Step 2: Convert to fraction form
    76,029.70/114,042.75 = 20,625.70/x
  3. Step 3: Cross multiply
    76,029.70x = 114,042.75 × 20,625.70
  4. Step 4: Simplify right side
    76,029.70x = 2,352,211,548.68
  5. Step 5: Solve for x
    x = 2,352,211,548.68/76,029.70
  6. Step 6: Final answer
    x = 30,938.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.